Pixmap question?

[=?big5?q?anukeey?= <anukeey yahoo com tw>]

Hi all:
I have two questions about pixmap usage:
1. How could I set a pixmap as background image of a 
window? I had tried it use GtkPixmap, but as I put
some widget on it, the Glade will show error about it,
how to do with this case?
2. As we know the widget size default is rectangle, so
I usually create a rectangle pixmap to attach it on
GtkPixmap, but if I need to mask out some part of my
pixmap, how to do that?

Thanks~

anukeey

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